Heo Jung-do

Attending physician

Kim

Ki Mo-hyan

Pyo Myun-hak

Yi So

Park Bok-gyu

Sun-woo's Father

Kang Jun-sang

Homeroom Teacher

Kim Joo-ryeon

Wie Jang-byung

Seok-joo

Team Leader Oh

Uhm Dae-hyup

Boss

Lee Gyeong-pil

Park Dong-pil

MRK

Football Newscaster (voice)

Ki Deok-chul

Jin-a's blind date

Chicken Restaurant Theater Senior

Seoul Man

Athletic Club Coach

Kang Ha-joon (#403)

Park Min-soo